Lammas, also known as Lughnasadh or in Welsh, Gŵyl Awst*, is a festival that hasn't been adopted into our modern calendar, though we do have the August bank holiday at the end of the month. It's the first of three harvest festivals, traditionally the wheat harvest.
I don't have wheat or any other grain, but I do have that modern import from the new world, potatoes, and I started harvesting them a few days ago. They're a bit small, really, but I have maincrop potatoes for growing big. I will eat these as they are, and all the better for it.
* Literally, August festival